TL4242QKTTRQ1 Datasheet, PDF (2/21 Pages) Texas Instruments – ADJUSTABLE LED DRIVER

TL4242-Q1
SLVS732E – JULY 2010 – REVISED JULY 2013
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
T_A
–40°C to 105°C
–40°C to 125°C
ORDERING INFORMATION⁽¹⁾
ORDERABLE PART NUMBER⁽²⁾
TL4242TDRJRQ1
TL4242QKTTRQ1
TOP-SIDE MARKING
4242T
TL4242Q
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.
NAME
D
GND
NC
PWM
Q
REF
ST
I
Thermal
pad
NO.
DRJ
KTT
5
6
3
4
7
N/A
1
2
6
7
4
5
2
3
8
1
–
–
PIN FUNCTIONS
DESCRIPTION
Status delay. To set status reaction delay, connect to GND with a capacitor. For no delay, leave
open.
Ground
No internal connection
Pulse-width modulation input. If not used, connect to I.
Output
Reference input. Connect to a shunt resistor.
Status output. Open-collector output. Connect to an external pullup resistor (R_PULLUP ≥ 4.7 kΩ).
Input. Connect directly to GND as close as possible to the device with a 100-nF ceramic capacitor.
Solder the thermal pad directly to the PCB. Connect to ground or leave floating
I8
PWM ¹
Figure 1. FUNCTIONAL BLOCK DIAGRAM
Bias Supply
+
−
Bandgap
Reference
6Q
4 _REF
Comparator
Status
Delay
2 _ST
3
5
GND
D
2
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